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30mm rims - enough?(8 posts)

30mm rims - enough?collinsc
Oct 7, 2003 11:00 PM
Clearly, either camp says the other is wrong. But as I am firmly on the fence, tell me what is up.
enough for what?weiwentg
Oct 8, 2003 5:26 AM

you'll note that the V-section rims generally have lower drag than their box section counterparts, even if the V-section rims aren't that deep (the Zipp 303 is 34mm deep, and its drag figures aren't that impressive). of course, the drag decreases noticeably when the rim gets deeper - 50mm is optimal for 'real' TT wheels.
basically, you want some sort of V-section rim, and elliptical or bladed spokes (I'd go with elliptical, like wheelsmith AE15, no need to slot hubs). remember the set of wheels I posted in components? I sold my Zipp 303s to get those. these feel no less aero than those Zipps.
what exactly are you thinking of doing? your question isn't all that clear.
enough for what?collinsc
Oct 8, 2003 7:26 AM
enough to be faster without just being heavier.

Those were ritchey rims right? 28mm? Whats the weight and what do you think of their responsiveness (as in: to accelerations).

ok, I think the ritcheys probably fit your billweiwentg
Oct 8, 2003 8:58 AM
the rims weigh 470-480g and are around 27mm deep (or 28, can't remember). even at 470-480g, they accelerate pretty fast since the overall wheelset weight is pretty low (just under 1500g for the bare wheels). I had mine built 16f/24r. Mike may recommend something with more spokes for you (he also had some problems finding one single front WCS rim, which is the same rim as the Pro except that the Pro has more holes, cheesier graphics, and a matte finish). the wheels feel at least as snappy as the Cane Creeks they replaced, and the Cane Creeks are not slow wheels. are they more aero? probably, but I don't have a wind tunnel. I decided on the spec with an eye to a compromise between aero and light. I'd let you try them if you were in town (and you used Campy).
I should add...weiwentg
Oct 8, 2003 9:04 AM
you already have a set of aeroheads with AC hubs, no? if you want a performance difference you can REALLY, REALLY feel, what you want is a set of carbon tubulars - zipp 404s or the deep section reynolds. if you swapped my wheels for yours, the difference would, in all honesty, not be that great. even a set of 404s will not get you on the podium.
in the end, all that matters is: is the purchase justified in your own eyes?
Oct 8, 2003 9:33 AM
im trying to put together a new bike, need new wheels and am looking for something different.
OK, go for the Ritcheysweiwentg
Oct 8, 2003 2:19 PM
I can think of a better way to spend $400. however, I cannot think of a better way to spend $400 on wheels.
don't take my word as the sole absolute truth ... but you have some of Mike's wheels and you know he's pretty darn good (quality and value for money). I can't think of anything else that good in that price range. I do know that Brazen Cycle Works (search google, they should be there) was offering Fusion rims built to Edco hubs with Sapim CX-ray spokes for roughly that price. Edcos are heavier, and use straight pull spokes; I have no idea if straight pull is better than regular. if you're looking for around $550, Speed Dream has their Aerolites (White Industries hubs, CX-rays, Fusion rims, triplet rear spoking). if you want a botique wheelset, you might try using a Performance coupon and buying a set of Velomaxes (ascent 2 looks pretty good), but that's still a bit more than $400. that's all I can think of off the top of my head for now. good luck.
ok, I think the ritcheys probably fit your billMShaw
Oct 8, 2003 1:43 PM
I like my Ritchey Pro wheels, but I love my 404s on my track bike!

The 404s are MUCH faster at speed.

For crits, a good, cheap, aero wheel is a good thing. I have a destroyed 440 wheel hanging in my garage because a friend crashed a few years ago during the Oceanside crit. I saw a pair of the Ritchey Pro wheels for $99 at Supergo the other day. I was seriously tempted to buy them to have as a spare set.